Question

Which of the following explains how the vast majority of energy enters Earth's ecosystems?
A. Decomposers break down organic matter into molecules with energy stored in their bonds. Producers absorb these molecules into their roots and produce more energy during photosynthesis. Consumers eat the producers for energy.
B. Producers use the waste of consumers to produce molecules with energy stored in their bonds. Decomposers absorb these molecules during photosynthesis. Consumers eat the decomposers for energy.
C. Consumers produce molecules with energy stored in their bonds when they respire. When consumers die the nutrients from their bodies enter the soil. Decomposers and producers eat their remains for energy.
D. Producers absorb sunlight and convert it into molecules with energy stored in the bonds. Consumers eat the plants for energy. When both producers and consumers die, decomposers eat their remains for energy.